Date: Tue, 13 Feb 2001 18:50:37 -0800 From: Johannes H Andersen <johannes.andersennopsamel.ac.uk> Subject: Re: '93 9000 APC problem
Brian Howerton wrote: > > Saabers, > > I've got a '93 9000 CSE with a boost problem. On an intermittent basis, > the car gets into a mode where the boost is essentially unregulated by the > APC system with the gauge going fully into the red zone until the fuel > cutoff is activated. I'm familiar with the operation of the APC system and > most of the components having previously replaced the solenoid and other > components. I know that most of the failure modes of the APC system send the > turbo into 'basic boost' mode but was wondering what failures would cause a > behavior like this. Responses from someone with the appropriate manual would > be appreciated. > > Regards, > Brian Yes, sticking wastegate fails to open. APC shuts down the fuel supply to preserve the engine. Most annoying when you prepare for a good shovel of power, then when the engine cuts out, you get launched up in the windscreen! Johannes
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